大般涅槃經義記 9.22

9.22

「師子」下，復問佛滅意，「何故如來入禪定窟」。下佛廣以十四復次明入所為。雖有多門，宗意令人學佛趣入。「以是」下結。

From "Siṃhanāda..." onward, he again asks about the intention of the Buddha's extinction: "Why does the Tathāgata enter the cave of meditative absorption?" Below, the Buddha broadly uses fourteen repetitions to explain the purpose of entering. Although there are many gates, the essential intent is to cause people to emulate the Buddha in progressing toward entry. From "For this..." onward, it concludes.